I think Americans, in general, just aren't as lazy as so many people in the countries where small mirrorless cameras are more popular than bigger and heavier DSLRs. I don't know why this might be though. Americans, in general, seem to be willing to work a bit harder and carry heavier DSLRs.

I am one of the Americans that has m4/3 gear, so my level of laziness must be similar to the others here in this forum.

Strange answers. I never mentioned that Americans were lazy, so collect yourself.